Mercedes 9G‑Tronic (725.0): Nine-Speed Automatic, Precision & Efficiency First launched on the E350 BlueTEC in 2013, the 9G-Tronic (W9A/725.0) is Mercedes-Benz’s flagship 9-speed torque-converter automatic, replacing both 7G– and 5G-Tronic units. It supports up to 700 Nm and is praised for ...